CVE-2020-15539 – This CVE describes a SQL injection vulnerabilit... (How to Fix)

Q: What is the severity of CVE-2020-15539?

CVE-2020-15539 has a CVSS score of 9.8 (CRITICAL). This CVE describes a SQL injection vulnerability in We-com Municipality Portal CMS 2.1.x through the cerca/ keywords field. Attackers can execute arbitrary SQL commands, potentially compromising the database. Organizations using this specific CMS version are affected.

📋 TL;DR

This CVE describes a SQL injection vulnerability in We-com Municipality Portal CMS 2.1.x through the cerca/ keywords field. Attackers can execute arbitrary SQL commands, potentially compromising the database. Organizations using this specific CMS version are affected.

💻 Affected Systems

Products:

We-com Municipality Portal CMS

Versions: 2.1.x

Operating Systems: Any

Default Config Vulnerable: ⚠️ Yes

Notes: Specifically affects the cerca/ keywords field functionality.

📦 What is this software?

Municipality Portal Cms by We Com

View all CVEs affecting Municipality Portal Cms →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete database compromise allowing data theft, modification, deletion, or full system takeover via subsequent attacks.

🟠

Likely Case

Unauthorized data access, extraction of sensitive information, and potential privilege escalation.

🟢

If Mitigated

Limited impact with proper input validation, parameterized queries, and network segmentation in place.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Public exploit details available; SQL injection typically requires minimal technical skill.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown

Vendor Advisory: None found

Restart Required: No

Instructions:

No official patch identified. Consider upgrading to a newer version if available or implementing workarounds.

🔧 Temporary Workarounds

Input Validation Filter

all

Implement server-side input validation to sanitize the cerca/ keywords field.

WAF Rule

all

Deploy a web application firewall with SQL injection detection rules.

🧯 If You Can't Patch

Disable or restrict access to the vulnerable cerca/ functionality if not essential.
Implement network segmentation to isolate the CMS from critical databases.

🔍 How to Verify

Check if Vulnerable:

Test the cerca/ keywords field with SQL injection payloads like ' OR '1'='1.

Check Version:

Check CMS version in admin panel or configuration files.

Verify Fix Applied:

Retest with SQL injection payloads after implementing fixes; ensure no database errors or unauthorized access.

📡 Detection & Monitoring

Log Indicators:

Unusual SQL queries in database logs
Error messages containing SQL syntax

Network Indicators:

HTTP requests to cerca/ with SQL keywords like UNION, SELECT, OR

SIEM Query:

source="web_logs" AND uri="/cerca/" AND (keywords CONTAINS "UNION" OR keywords CONTAINS "SELECT" OR keywords CONTAINS "OR")

📊 Metadata

CVE ID: CVE-2020-15539

CVSS v3 Score: 9.8 (CRITICAL)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-89

Published: July 5, 2020

Last Updated: November 21, 2024

🔗 References

https://cxsecurity.com/issue/WLB-2020060011 Exploit,Third Party Advisory
https://packetstormsecurity.com/files/157886/We-Com-Municipality-Portal-CMS-2.1.x-Cross-Site-Scripting-SQL-Injection.html Exploit,Third Party Advisory,VDB Entry
https://cxsecurity.com/issue/WLB-2020060011 Exploit,Third Party Advisory
https://packetstormsecurity.com/files/157886/We-Com-Municipality-Portal-CMS-2.1.x-Cross-Site-Scripting-SQL-Injection.html Exploit,Third Party Advisory,VDB Entry

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🔗 Related Vulnerabilities

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